Tools: Debugging Native and Java Code with WDB

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Tools for

Debugging

gdb

Set a Breakpoint in Compiled Code

• Setting a breakpoint in BufferedInputStream::fill – go to the frame:

(gdb) thr

[Current thread is 11 (system thread 5485)]

(gdb) bt

#0 0x6ffaf6a0 in _read_sys () from /usr/lib/libc.2

#1 0x6ffbb664 in read () from /usr/lib/libc.2

#2 0x6f866ce0 in JVM_Read ()

from /opt/java1.3/jre/lib/PA_RISC2.0/server/libjvm.sl

#3 0x6e219100 in socketReadWork ()

from /opt/java1.3/jre/lib/PA_RISC2.0/libnet.sl

#4 0x6e219328 in socketReadOnStack ()

from /opt/java1.3/jre/lib/PA_RISC2.0/libnet.sl

#5 0x6e219394 in Java_java_net_SocketInputStream_socketRead ()

from /opt/java1.3/jre/lib/PA_RISC2.0/libnet.sl